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1 // tree-expr.h -*- C++ -*- |
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2 /* |
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3 |
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4 Copyright (C) 1992, 1993, 1994, 1995 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 2, or (at your option) any |
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11 later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, write to the Free |
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20 Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 |
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22 */ |
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23 |
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24 #if !defined (octave_tree_expr_h) |
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25 #define octave_tree_expr_h 1 |
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26 |
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27 #if defined (__GNUG__) |
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28 #pragma interface |
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29 #endif |
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30 |
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31 #include <time.h> |
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32 #include <stdio.h> |
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33 #include <iostream.h> |
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34 |
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35 #include "SLList.h" |
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36 |
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37 #include "variables.h" |
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38 #include "mappers.h" |
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39 #include "error.h" |
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40 #include "oct-obj.h" |
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41 |
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42 class tree_constant; |
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43 class tree_statement_list; |
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44 class tree_argument_list; |
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45 class tree_parameter_list; |
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46 class tree_return_list; |
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47 class tree_va_return_list; |
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48 class symbol_record; |
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49 class symbol_table; |
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50 |
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51 class tree_matrix; |
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52 class tree_builtin; |
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53 class tree_identifier; |
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54 class tree_indirect_ref; |
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55 class tree_function; |
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56 class tree_expression; |
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57 class tree_prefix_expression; |
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58 class tree_postfix_expression; |
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59 class tree_unary_expression; |
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60 class tree_binary_expression; |
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61 class tree_assignment_expression; |
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62 class tree_simple_assignment_expression; |
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63 class tree_multi_assignment_expression; |
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64 class tree_colon_expression; |
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65 class tree_index_expression; |
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66 |
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67 #include "tree-base.h" |
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68 |
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69 // A base class for expressions. |
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70 |
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71 class |
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72 tree_expression : public tree |
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73 { |
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74 public: |
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75 int in_parens; |
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76 |
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77 enum type |
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78 { |
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79 unknown, |
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80 assignment, |
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81 simple_assignment, |
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82 multi_assignment, |
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83 add, |
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84 subtract, |
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85 multiply, |
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86 el_mul, |
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87 divide, |
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88 el_div, |
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89 leftdiv, |
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90 el_leftdiv, |
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91 power, |
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92 elem_pow, |
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93 cmp_lt, |
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94 cmp_le, |
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95 cmp_eq, |
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96 cmp_ge, |
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97 cmp_gt, |
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98 cmp_ne, |
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99 and_and, |
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100 or_or, |
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101 and, |
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102 or, |
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103 not, |
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104 unot, |
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105 uminus, |
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106 hermitian, |
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107 transpose, |
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108 colon, |
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109 index, |
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110 increment, |
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111 decrement, |
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112 }; |
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113 |
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114 tree_expression (int l = -1, int c = -1) : tree (l, c) |
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115 { |
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116 in_parens = 0; |
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117 etype = unknown; |
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118 } |
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119 |
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120 virtual ~tree_expression (void) { } |
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121 |
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122 virtual int is_multi_val_ret_expression (void) const |
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123 { return 0; } |
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124 |
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125 virtual int is_identifier (void) const |
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126 { return 0; } |
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127 |
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128 virtual int is_indirect_ref (void) const |
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129 { return 0; } |
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130 |
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131 virtual int is_index_expression (void) const |
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132 { return 0; } |
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133 |
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134 virtual int is_assignment_expression (void) const |
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135 { return 0; } |
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136 |
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137 virtual int is_prefix_expression (void) const |
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138 { return 0; } |
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139 |
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140 virtual void mark_for_possible_ans_assign (void) |
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141 { panic_impossible (); } |
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142 |
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143 virtual tree_constant eval (int print) = 0; |
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144 |
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145 protected: |
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146 type etype; |
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147 }; |
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148 |
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149 // General matrices. This allows us to construct matrices from |
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150 // other matrices, variables, and functions. |
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151 |
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152 class |
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153 tree_matrix : public tree_expression |
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154 { |
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155 public: |
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156 enum dir |
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157 { |
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158 md_none, |
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159 md_right, |
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160 md_down, |
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161 }; |
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162 |
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163 tree_matrix (void) |
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164 { |
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165 direction = tree_matrix::md_none; |
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166 element = 0; |
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167 next = 0; |
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168 } |
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169 |
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170 tree_matrix (tree_expression *e, tree_matrix::dir d) |
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171 { |
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172 direction = d; |
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173 element = e; |
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174 next = 0; |
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175 } |
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176 |
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177 ~tree_matrix (void); |
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178 |
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179 tree_matrix *chain (tree_expression *e, tree_matrix::dir d); |
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180 tree_matrix *reverse (void); |
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181 int length (void); |
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182 |
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183 tree_return_list *to_return_list (void); |
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184 |
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185 tree_constant eval (int print); |
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186 |
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187 void print_code (ostream& os); |
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188 |
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189 private: |
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190 tree_matrix::dir direction; // Direction from the previous element. |
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191 tree_expression *element; |
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192 tree_matrix *next; |
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193 }; |
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194 |
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195 // A base class for objects that can be return multiple values |
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196 |
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197 class |
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198 tree_multi_val_ret : public tree_expression |
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199 { |
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200 public: |
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201 tree_multi_val_ret (int l = -1, int c = -1) : tree_expression (l, c) { } |
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202 |
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203 ~tree_multi_val_ret (void) { } |
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204 |
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205 int is_multi_val_ret_expression (void) const |
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206 { return 1; } |
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207 |
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208 tree_constant eval (int print); |
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209 |
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210 virtual Octave_object eval (int print, int nargout, |
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211 const Octave_object& args) = 0; |
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212 }; |
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213 |
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214 // Used internally. |
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215 |
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216 class |
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217 tree_oct_obj : public tree_multi_val_ret |
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218 { |
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219 public: |
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220 tree_oct_obj (int l = -1, int c = -1) : tree_multi_val_ret (l, c) { } |
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221 |
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222 tree_oct_obj (const Octave_object& v, int l = -1, int c = -1) |
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223 : tree_multi_val_ret (l, c) |
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224 { |
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225 values = v; |
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226 } |
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227 |
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228 ~tree_oct_obj (void) { } |
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229 |
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230 tree_constant eval (int print); |
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231 |
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232 Octave_object eval (int print, int nargout, const Octave_object& args); |
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233 |
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234 void print_code (ostream& os) { } |
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235 |
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236 private: |
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237 Octave_object values; |
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238 }; |
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239 |
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240 // A base class for objects that can be evaluated with argument lists. |
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241 |
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242 class |
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243 tree_fvc : public tree_multi_val_ret |
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244 { |
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245 public: |
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246 tree_fvc (int l = -1, int c = -1) : tree_multi_val_ret (l, c) { } |
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247 |
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248 ~tree_fvc (void) { } |
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249 |
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250 virtual int is_constant (void) const |
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251 { return 0; } |
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252 |
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253 virtual tree_constant assign (tree_constant& t, |
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254 const Octave_object& args); |
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255 |
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256 virtual char *name (void) const |
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257 { panic_impossible (); return 0; } |
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258 |
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259 virtual void bump_value (tree_expression::type) |
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260 { panic_impossible (); } |
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261 |
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262 virtual tree_constant lookup_map_element (SLList<char*>& list, |
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263 int insert = 0, int silent = 0); |
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264 |
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265 virtual int max_expected_args (void) |
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266 { panic_impossible (); return 0; } |
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267 |
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268 virtual char *fcn_file_name (void) |
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269 { return 0; } |
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270 |
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271 virtual time_t time_parsed (void) |
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272 { panic_impossible (); return 0; } |
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273 |
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274 virtual int is_system_fcn_file (void) const |
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275 { return 0; } |
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276 |
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277 virtual int save (ostream& os, int mark_as_global = 0, |
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278 int precision = 17) |
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279 { panic_impossible (); return 0; } |
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280 }; |
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281 |
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282 // Symbols from the symbol table. |
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283 |
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284 class |
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285 tree_identifier : public tree_fvc |
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286 { |
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287 friend class tree_index_expression; |
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288 |
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289 public: |
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290 tree_identifier (int l = -1, int c = -1) : tree_fvc (l, c) |
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291 { |
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292 sym = 0; |
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293 maybe_do_ans_assign = 0; |
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294 } |
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295 |
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296 tree_identifier (symbol_record *s, int l = -1, int c = -1) : tree_fvc (l, c) |
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297 { |
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298 sym = s; |
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299 maybe_do_ans_assign = 0; |
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300 } |
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301 |
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302 ~tree_identifier (void) { } |
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303 |
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304 int is_identifier (void) const |
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305 { return 1; } |
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306 |
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307 char *name (void) const; |
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308 |
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309 tree_identifier *define (tree_constant *t); |
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310 tree_identifier *define (tree_function *t); |
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311 |
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312 void document (char *s); |
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313 |
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314 tree_constant assign (tree_constant& t); |
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315 tree_constant assign (tree_constant& t, const Octave_object& args); |
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316 |
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317 tree_constant assign (SLList<char*> list, tree_constant& t); |
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318 tree_constant assign (SLList<char*> list, tree_constant& t, |
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319 const Octave_object& args); |
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320 |
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321 int is_defined (void); |
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322 |
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323 void bump_value (tree_expression::type); |
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324 |
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325 tree_fvc *do_lookup (int& script_file_executed, int exec_script = 1); |
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326 |
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327 void link_to_global (void); |
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328 |
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329 void mark_as_formal_parameter (void); |
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330 |
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331 void mark_for_possible_ans_assign (void) |
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332 { maybe_do_ans_assign = 1; } |
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333 |
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334 tree_constant eval (int print); |
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335 |
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336 Octave_object eval (int print, int nargout, const Octave_object& args); |
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337 |
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338 void eval_undefined_error (void); |
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339 |
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340 void print_code (ostream& os); |
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341 |
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342 private: |
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343 symbol_record *sym; |
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344 int maybe_do_ans_assign; |
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345 }; |
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346 |
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347 // Indirect references to values (structure references). |
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348 |
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349 class |
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350 tree_indirect_ref : public tree_fvc |
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351 { |
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352 public: |
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353 tree_indirect_ref (int l = -1, int c = -1) : tree_fvc (l, c) |
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354 { |
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355 id = 0; |
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356 preserve_ident = 0; |
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357 } |
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358 |
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359 tree_indirect_ref (tree_identifier *i, int l = -1, int c = -1) |
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360 : tree_fvc (l, c) |
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361 { |
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362 id = i; |
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363 preserve_ident = 0; |
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364 } |
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365 |
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366 ~tree_indirect_ref (void); |
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367 |
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368 tree_indirect_ref *chain (const char *s); |
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369 |
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370 int is_indirect_ref (void) const |
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371 { return 1; } |
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372 |
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373 int is_identifier_only (void) const |
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374 { return (id && refs.empty ()); } |
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375 |
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376 tree_identifier *ident (void) |
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377 { return id; } |
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378 |
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379 void preserve_identifier (void) |
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380 { preserve_ident = 1; } |
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381 |
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382 char *name (void); |
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383 |
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384 tree_constant assign (tree_constant& t); |
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385 tree_constant assign (tree_constant& t, const Octave_object& args); |
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386 |
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387 void mark_for_possible_ans_assign (void) |
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388 { id->mark_for_possible_ans_assign (); } |
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389 |
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390 tree_constant eval (int print); |
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391 |
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392 Octave_object eval (int print, int nargout, const Octave_object& args); |
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393 |
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394 void print_code (ostream& os); |
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395 |
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396 private: |
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397 tree_identifier *id; |
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398 SLList<char*> refs; |
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399 int preserve_ident; |
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400 }; |
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401 |
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402 // Index expressions. |
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403 |
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404 class |
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405 tree_index_expression : public tree_multi_val_ret |
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406 { |
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407 public: |
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408 tree_index_expression (int l = -1, int c = -1) : tree_multi_val_ret (l, c) |
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409 { |
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410 id = 0; |
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411 list = 0; |
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412 } |
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413 |
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414 tree_index_expression (tree_identifier *i, int l = -1, int c = -1) |
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415 : tree_multi_val_ret (l, c) |
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416 { |
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417 id = new tree_indirect_ref (i); |
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418 list = 0; |
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419 } |
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420 |
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421 tree_index_expression (tree_identifier *i, tree_argument_list *lst, |
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422 int l = -1, int c = -1) |
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423 : tree_multi_val_ret (l, c) |
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424 { |
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425 id = new tree_indirect_ref (i); |
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426 list = lst; |
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427 } |
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428 |
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429 tree_index_expression (tree_indirect_ref *i, int l = -1, int c = -1) |
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430 : tree_multi_val_ret (l, c) |
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431 { |
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432 id = i; |
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433 list = 0; |
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434 } |
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435 |
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436 tree_index_expression (tree_indirect_ref *i, tree_argument_list *lst, |
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437 int l = -1, int c = -1) |
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438 : tree_multi_val_ret (l, c) |
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439 { |
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440 id = i; |
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441 list = lst; |
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442 } |
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443 |
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444 ~tree_index_expression (void); |
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445 |
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446 int is_index_expression (void) const |
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447 { return 1; } |
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448 |
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449 tree_indirect_ref *ident (void) |
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450 { return id; } |
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451 |
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452 char *name (void) |
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453 { return id->name (); } |
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454 |
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455 tree_argument_list *arg_list (void) |
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456 { return list; } |
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457 |
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458 void mark_for_possible_ans_assign (void) |
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459 { |
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460 if (id) |
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461 id->mark_for_possible_ans_assign (); |
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462 } |
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463 |
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464 tree_constant eval (int print); |
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465 |
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466 Octave_object eval (int print, int nargout, const Octave_object& args); |
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467 |
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468 void eval_error (void); |
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469 |
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470 void print_code (ostream& os); |
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471 |
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472 private: |
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473 tree_indirect_ref *id; |
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474 tree_argument_list *list; |
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475 }; |
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476 |
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477 // Prefix expressions. |
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478 |
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479 class |
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480 tree_prefix_expression : public tree_expression |
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481 { |
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482 public: |
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483 tree_prefix_expression (int l = -1, int c = -1) : tree_expression (l, c) |
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484 { |
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485 id = 0; |
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486 etype = unknown; |
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487 } |
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488 |
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489 tree_prefix_expression (tree_identifier *t, tree_expression::type et, |
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|
490 int l = -1, int c = -1) |
|
|
491 : tree_expression (l, c) |
|
|
492 { |
|
|
493 id = t; |
|
|
494 etype = et; |
|
|
495 } |
|
|
496 |
|
|
497 ~tree_prefix_expression (void) |
|
|
498 { delete id; } |
|
|
499 |
|
|
500 tree_constant eval (int print); |
|
|
501 |
|
|
502 void eval_error (void); |
|
|
503 |
|
|
504 int is_prefix_expression (void) const |
|
|
505 { return 1; } |
|
|
506 |
|
581
|
507 char *oper (void) const; |
|
|
508 |
|
|
509 void print_code (ostream& os); |
|
|
510 |
|
578
|
511 private: |
|
|
512 tree_identifier *id; |
|
|
513 }; |
|
|
514 |
|
|
515 // Postfix expressions. |
|
|
516 |
|
|
517 class |
|
|
518 tree_postfix_expression : public tree_expression |
|
|
519 { |
|
|
520 public: |
|
|
521 tree_postfix_expression (int l = -1, int c = -1) : tree_expression (l, c) |
|
|
522 { |
|
|
523 id = 0; |
|
|
524 etype = unknown; |
|
|
525 } |
|
|
526 |
|
|
527 tree_postfix_expression (tree_identifier *t, tree_expression::type et, |
|
|
528 int l = -1, int c = -1) |
|
|
529 : tree_expression (l, c) |
|
|
530 { |
|
|
531 id = t; |
|
|
532 etype = et; |
|
|
533 } |
|
|
534 |
|
|
535 ~tree_postfix_expression (void) |
|
|
536 { delete id; } |
|
|
537 |
|
|
538 tree_constant eval (int print); |
|
|
539 |
|
|
540 void eval_error (void); |
|
|
541 |
|
581
|
542 char *oper (void) const; |
|
|
543 |
|
|
544 void print_code (ostream& os); |
|
|
545 |
|
578
|
546 private: |
|
|
547 tree_identifier *id; |
|
|
548 }; |
|
|
549 |
|
|
550 // Unary expressions. |
|
|
551 |
|
|
552 class |
|
|
553 tree_unary_expression : public tree_expression |
|
|
554 { |
|
|
555 public: |
|
|
556 tree_unary_expression (int l = -1, int c = -1) : tree_expression (l, c) |
|
|
557 { |
|
|
558 etype = tree_expression::unknown; |
|
|
559 op = 0; |
|
|
560 } |
|
|
561 |
|
|
562 tree_unary_expression (tree_expression *a, tree_expression::type t, |
|
|
563 int l = -1, int c = -1) |
|
|
564 : tree_expression (l, c) |
|
|
565 { |
|
|
566 etype = t; |
|
|
567 op = a; |
|
|
568 } |
|
|
569 |
|
|
570 ~tree_unary_expression (void) |
|
|
571 { delete op; } |
|
|
572 |
|
|
573 tree_constant eval (int print); |
|
|
574 |
|
|
575 void eval_error (void); |
|
|
576 |
|
581
|
577 char *oper (void) const; |
|
|
578 |
|
|
579 void print_code (ostream& os); |
|
|
580 |
|
578
|
581 private: |
|
|
582 tree_expression *op; |
|
|
583 }; |
|
|
584 |
|
|
585 // Binary expressions. |
|
|
586 |
|
|
587 class |
|
|
588 tree_binary_expression : public tree_expression |
|
|
589 { |
|
|
590 public: |
|
|
591 tree_binary_expression (int l = -1, int c = -1) : tree_expression (l, c) |
|
|
592 { |
|
|
593 etype = tree_expression::unknown; |
|
|
594 op1 = 0; |
|
|
595 op2 = 0; |
|
|
596 } |
|
|
597 |
|
|
598 tree_binary_expression (tree_expression *a, tree_expression *b, |
|
|
599 tree_expression::type t, int l = -1, int c = -1) |
|
|
600 : tree_expression (l, c) |
|
|
601 { |
|
|
602 etype = t; |
|
|
603 op1 = a; |
|
|
604 op2 = b; |
|
|
605 } |
|
|
606 |
|
|
607 ~tree_binary_expression (void) |
|
|
608 { |
|
|
609 delete op1; |
|
|
610 delete op2; |
|
|
611 } |
|
|
612 |
|
|
613 tree_constant eval (int print); |
|
|
614 |
|
|
615 void eval_error (void); |
|
|
616 |
|
581
|
617 char *oper (void) const; |
|
|
618 |
|
|
619 void print_code (ostream& os); |
|
|
620 |
|
578
|
621 private: |
|
|
622 tree_expression *op1; |
|
|
623 tree_expression *op2; |
|
|
624 }; |
|
|
625 |
|
|
626 // Simple assignment expressions. |
|
|
627 |
|
|
628 class |
|
666
|
629 tree_simple_assignment_expression : public tree_expression |
|
578
|
630 { |
|
748
|
631 private: |
|
581
|
632 void init (int plhs, int ans_assign) |
|
|
633 { |
|
|
634 etype = tree_expression::assignment; |
|
1270
|
635 lhs_idx_expr = 0; |
|
581
|
636 lhs = 0; |
|
|
637 index = 0; |
|
|
638 rhs = 0; |
|
|
639 preserve = plhs; |
|
|
640 ans_ass = ans_assign; |
|
|
641 } |
|
|
642 |
|
748
|
643 public: |
|
581
|
644 tree_simple_assignment_expression (int plhs = 0, int ans_assign = 0, |
|
|
645 int l = -1, int c = -1) |
|
666
|
646 : tree_expression (l, c) |
|
581
|
647 { init (plhs, ans_assign); } |
|
578
|
648 |
|
|
649 tree_simple_assignment_expression (tree_identifier *i, |
|
|
650 tree_expression *r, |
|
581
|
651 int plhs = 0, int ans_assign = 0, |
|
|
652 int l = -1, int c = -1) |
|
666
|
653 : tree_expression (l, c) |
|
578
|
654 { |
|
581
|
655 init (plhs, ans_assign); |
|
748
|
656 lhs = new tree_indirect_ref (i); |
|
|
657 rhs = r; |
|
|
658 } |
|
|
659 |
|
|
660 tree_simple_assignment_expression (tree_indirect_ref *i, |
|
|
661 tree_expression *r, |
|
|
662 int plhs = 0, int ans_assign = 0, |
|
|
663 int l = -1, int c = -1) |
|
|
664 : tree_expression (l, c) |
|
|
665 { |
|
|
666 init (plhs, ans_assign); |
|
578
|
667 lhs = i; |
|
|
668 rhs = r; |
|
|
669 } |
|
|
670 |
|
|
671 tree_simple_assignment_expression (tree_index_expression *idx_expr, |
|
|
672 tree_expression *r, |
|
581
|
673 int plhs = 0, int ans_assign = 0, |
|
|
674 int l = -1, int c = -1) |
|
666
|
675 : tree_expression (l, c) |
|
578
|
676 { |
|
581
|
677 init (plhs, ans_assign); |
|
1270
|
678 lhs_idx_expr = idx_expr; // cache this -- we may need to delete it. |
|
578
|
679 lhs = idx_expr->ident (); |
|
|
680 index = idx_expr->arg_list (); |
|
|
681 rhs = r; |
|
|
682 } |
|
|
683 |
|
|
684 ~tree_simple_assignment_expression (void); |
|
|
685 |
|
748
|
686 int left_hand_side_is_identifier_only (void) |
|
|
687 { return lhs->is_identifier_only (); } |
|
|
688 |
|
|
689 tree_identifier *left_hand_side_id (void) |
|
|
690 { return lhs->ident (); } |
|
578
|
691 |
|
581
|
692 int is_ans_assign (void) |
|
|
693 { return ans_ass; } |
|
|
694 |
|
578
|
695 tree_constant eval (int print); |
|
|
696 |
|
666
|
697 int is_assignment_expression (void) const |
|
|
698 { return 1; } |
|
|
699 |
|
578
|
700 void eval_error (void); |
|
|
701 |
|
581
|
702 void print_code (ostream& os); |
|
|
703 |
|
578
|
704 private: |
|
1270
|
705 tree_index_expression *lhs_idx_expr; |
|
748
|
706 tree_indirect_ref *lhs; |
|
578
|
707 tree_argument_list *index; |
|
|
708 tree_expression *rhs; |
|
|
709 int preserve; |
|
581
|
710 int ans_ass; |
|
578
|
711 }; |
|
|
712 |
|
|
713 // Multi-valued assignment expressions. |
|
|
714 |
|
|
715 class |
|
666
|
716 tree_multi_assignment_expression : public tree_multi_val_ret |
|
578
|
717 { |
|
|
718 public: |
|
1229
|
719 tree_multi_assignment_expression (int plhs = 0, int l = -1, int c = -1) |
|
666
|
720 : tree_multi_val_ret (l, c) |
|
578
|
721 { |
|
|
722 etype = tree_expression::multi_assignment; |
|
1229
|
723 preserve = plhs; |
|
578
|
724 lhs = 0; |
|
|
725 rhs = 0; |
|
|
726 } |
|
|
727 |
|
|
728 tree_multi_assignment_expression (tree_return_list *lst, |
|
666
|
729 tree_multi_val_ret *r, |
|
1229
|
730 int plhs = 0, |
|
578
|
731 int l = -1, int c = -1) |
|
666
|
732 : tree_multi_val_ret (l, c) |
|
578
|
733 { |
|
|
734 etype = tree_expression::multi_assignment; |
|
1229
|
735 preserve = plhs; |
|
578
|
736 lhs = lst; |
|
|
737 rhs = r; |
|
|
738 } |
|
|
739 |
|
|
740 ~tree_multi_assignment_expression (void); |
|
|
741 |
|
|
742 tree_constant eval (int print); |
|
|
743 |
|
|
744 Octave_object eval (int print, int nargout, const Octave_object& args); |
|
|
745 |
|
666
|
746 int is_assignment_expression (void) const |
|
|
747 { return 1; } |
|
|
748 |
|
578
|
749 void eval_error (void); |
|
|
750 |
|
581
|
751 void print_code (ostream& os); |
|
|
752 |
|
578
|
753 private: |
|
1229
|
754 int preserve; |
|
578
|
755 tree_return_list *lhs; |
|
666
|
756 tree_multi_val_ret *rhs; |
|
578
|
757 }; |
|
|
758 |
|
|
759 // Colon expressions. |
|
|
760 |
|
|
761 class |
|
|
762 tree_colon_expression : public tree_expression |
|
|
763 { |
|
|
764 public: |
|
|
765 tree_colon_expression (int l = -1, int c = -1) : tree_expression (l, c) |
|
|
766 { |
|
|
767 etype = tree_expression::colon; |
|
|
768 op1 = 0; |
|
|
769 op2 = 0; |
|
|
770 op3 = 0; |
|
|
771 } |
|
|
772 |
|
|
773 tree_colon_expression (tree_expression *a, tree_expression *b, |
|
|
774 int l = -1, int c = -1) |
|
|
775 : tree_expression (l, c) |
|
|
776 { |
|
|
777 etype = tree_expression::colon; |
|
|
778 op1 = a; |
|
|
779 op2 = b; |
|
|
780 op3 = 0; |
|
|
781 } |
|
|
782 |
|
|
783 ~tree_colon_expression (void) |
|
|
784 { |
|
|
785 delete op1; |
|
|
786 delete op2; |
|
|
787 delete op3; |
|
|
788 } |
|
|
789 |
|
|
790 tree_colon_expression *chain (tree_expression *t); |
|
|
791 |
|
|
792 tree_constant eval (int print); |
|
|
793 |
|
|
794 void eval_error (const char *s); |
|
|
795 |
|
581
|
796 void print_code (ostream& os); |
|
|
797 |
|
578
|
798 private: |
|
|
799 tree_expression *op1; |
|
|
800 tree_expression *op2; |
|
|
801 tree_expression *op3; |
|
|
802 }; |
|
|
803 |
|
|
804 // Builtin functions. |
|
|
805 |
|
|
806 class |
|
|
807 tree_builtin : public tree_fvc |
|
|
808 { |
|
|
809 public: |
|
|
810 tree_builtin (const char *nm = 0); |
|
|
811 |
|
|
812 tree_builtin (int i_max, int o_max, Mapper_fcn& m_fcn, |
|
|
813 const char *nm = 0); |
|
|
814 |
|
|
815 tree_builtin (int i_max, int o_max, Octave_builtin_fcn f, |
|
|
816 const char *nm = 0); |
|
|
817 |
|
1270
|
818 ~tree_builtin (void) { } // XXX ?? XXX |
|
|
819 |
|
578
|
820 // int is_builtin (void) const; |
|
|
821 |
|
|
822 int is_mapper_function (void) const |
|
|
823 { return is_mapper; } |
|
|
824 |
|
|
825 tree_constant eval (int print); |
|
|
826 |
|
|
827 Octave_object eval (int print, int nargout, const Octave_object& args); |
|
|
828 |
|
|
829 char *name (void) const |
|
|
830 { return my_name; } |
|
|
831 |
|
|
832 int max_expected_args (void); |
|
|
833 |
|
581
|
834 void print_code (ostream& os) |
|
|
835 { |
|
|
836 os << my_name << " can't be printed because it is a builtin function\n"; |
|
|
837 } |
|
|
838 |
|
578
|
839 private: |
|
|
840 int nargin_max; |
|
|
841 int nargout_max; |
|
|
842 int is_mapper; |
|
|
843 Mapper_fcn mapper_fcn; |
|
|
844 Octave_builtin_fcn fcn; |
|
|
845 char *my_name; |
|
|
846 }; |
|
|
847 |
|
|
848 // User defined functions. |
|
|
849 |
|
494
|
850 class |
|
|
851 tree_function : public tree_fvc |
|
|
852 { |
|
748
|
853 private: |
|
1161
|
854 void install_nargin_and_nargout (void); |
|
|
855 |
|
|
856 void bind_nargin_and_nargout (int nargin, int nargout); |
|
|
857 |
|
578
|
858 void init (void) |
|
|
859 { |
|
|
860 call_depth = 0; |
|
|
861 param_list = 0; |
|
|
862 ret_list = 0; |
|
|
863 sym_tab = 0; |
|
|
864 cmd_list = 0; |
|
|
865 file_name = 0; |
|
|
866 fcn_name = 0; |
|
|
867 t_parsed = 0; |
|
|
868 system_fcn_file = 0; |
|
|
869 num_named_args = 0; |
|
|
870 num_args_passed = 0; |
|
|
871 curr_va_arg_number = 0; |
|
723
|
872 vr_list = 0; |
|
578
|
873 } |
|
494
|
874 |
|
748
|
875 public: |
|
578
|
876 tree_function (int l = -1, int c = -1) : tree_fvc (l, c) |
|
|
877 { init (); } |
|
494
|
878 |
|
578
|
879 tree_function (tree_statement_list *cl, symbol_table *st, |
|
|
880 int l = -1, int c = -1) |
|
|
881 : tree_fvc (l, c) |
|
|
882 { |
|
|
883 init (); |
|
|
884 sym_tab = st; |
|
|
885 cmd_list = cl; |
|
1161
|
886 install_nargin_and_nargout (); |
|
578
|
887 } |
|
|
888 |
|
1270
|
889 ~tree_function (void); |
|
|
890 |
|
578
|
891 // tree_function *define (tree_statement_list *t); |
|
494
|
892 tree_function *define_param_list (tree_parameter_list *t); |
|
|
893 tree_function *define_ret_list (tree_parameter_list *t); |
|
|
894 |
|
905
|
895 void stash_fcn_file_name (void); |
|
578
|
896 |
|
|
897 void stash_fcn_file_time (time_t t) |
|
|
898 { t_parsed = t; } |
|
494
|
899 |
|
578
|
900 char *fcn_file_name (void) |
|
|
901 { return file_name; } |
|
|
902 |
|
|
903 time_t time_parsed (void) |
|
|
904 { return t_parsed; } |
|
494
|
905 |
|
|
906 void mark_as_system_fcn_file (void); |
|
578
|
907 |
|
|
908 int is_system_fcn_file (void) const |
|
|
909 { return system_fcn_file; } |
|
494
|
910 |
|
|
911 int takes_varargs (void) const; |
|
578
|
912 |
|
|
913 void octave_va_start (void) |
|
|
914 { curr_va_arg_number = num_named_args; } |
|
|
915 |
|
494
|
916 tree_constant octave_va_arg (void); |
|
|
917 |
|
922
|
918 Octave_object octave_all_va_args (void); |
|
|
919 |
|
723
|
920 int takes_var_return (void) const; |
|
|
921 |
|
|
922 void octave_vr_val (const tree_constant& val); |
|
|
923 |
|
494
|
924 void stash_function_name (char *s); |
|
578
|
925 |
|
|
926 char *function_name (void) |
|
|
927 { return fcn_name; } |
|
494
|
928 |
|
|
929 tree_constant eval (int print); |
|
|
930 |
|
506
|
931 Octave_object eval (int print, int nargout, const Octave_object& args); |
|
494
|
932 |
|
|
933 int max_expected_args (void); |
|
|
934 |
|
|
935 void traceback_error (void); |
|
|
936 |
|
581
|
937 void print_code (ostream& os); |
|
|
938 |
|
494
|
939 private: |
|
|
940 int call_depth; |
|
|
941 tree_parameter_list *param_list; |
|
|
942 tree_parameter_list *ret_list; |
|
|
943 symbol_table *sym_tab; |
|
578
|
944 tree_statement_list *cmd_list; |
|
494
|
945 char *file_name; |
|
|
946 char *fcn_name; |
|
|
947 time_t t_parsed; |
|
|
948 int system_fcn_file; |
|
|
949 int num_named_args; |
|
500
|
950 Octave_object args_passed; |
|
494
|
951 int num_args_passed; |
|
508
|
952 int curr_va_arg_number; |
|
723
|
953 tree_va_return_list *vr_list; |
|
1161
|
954 symbol_record *nargin_sr; |
|
|
955 symbol_record *nargout_sr; |
|
494
|
956 }; |
|
|
957 |
|
|
958 #endif |
|
|
959 |
|
|
960 /* |
|
|
961 ;;; Local Variables: *** |
|
|
962 ;;; mode: C++ *** |
|
|
963 ;;; page-delimiter: "^/\\*" *** |
|
|
964 ;;; End: *** |
|
|
965 */ |
